TLDR; new chins 200ah in parallel after a couple of partly sunny days have charged from 13.1v to 13.2v.
Ok so I got a couple of new chins 200ah batteries from Amazon a couple of days ago. They were both at 13.1v out of the box. I have a new renogy rover 60amp CC and set the user settings to what the chins manual said. The CC charged my old optima agm batteries just fine for a couple of days.
I have five 100w renogy mono panels that are in series and worked fine for years.
The last couple of days have been partly cloudy with only 3-4 hours of full sun.
No load on the batteries other than the CC and cheap Amazon 12v meter.
Would this be "normal" for these batteries to have only increased .1v in two partly cloudy days of charging? The CC showed 300w charge for maybe 3-4 hours each day then ~ 100w ish.
Ok so I got a couple of new chins 200ah batteries from Amazon a couple of days ago. They were both at 13.1v out of the box. I have a new renogy rover 60amp CC and set the user settings to what the chins manual said. The CC charged my old optima agm batteries just fine for a couple of days.
I have five 100w renogy mono panels that are in series and worked fine for years.
The last couple of days have been partly cloudy with only 3-4 hours of full sun.
No load on the batteries other than the CC and cheap Amazon 12v meter.
Would this be "normal" for these batteries to have only increased .1v in two partly cloudy days of charging? The CC showed 300w charge for maybe 3-4 hours each day then ~ 100w ish.